Add more noun and measurement details

docs/lessons/numbers-dates-time.mdx

@@ -559,20 +559,28 @@ proper spellings would be:
 
 ### Mass/Volume/Weight
 
-For mass, assume that measurements are in grams or pounds (depending on where
-you are in the world). Add <HisyeoText kind='latin'>cënpö</HisyeoText> for kilograms or tons.
+A unit of mass is 1 gram. Add <HisyeoWord is='cënpö'/> for kilograms or <HisyeoWord is='cüti'/> for
+milligrams.
 
 > It is widely recommended that adults consume 15-35 grams of fiber daily, although many Americans fall short.
 > 
 > —Casey Seiden, Verywell Health, 3 May 2024
 
 <HisyeoTabs>
-  <p>pı nulto pësnëhot vos umo dës xonluk mokon zöhün doi dës siüvo gıtno dus tiü moliyü son dus tiü öni kut yë küsowi hoi xokön lono lëkın mikdol yë ëto umo Umelıkın lı püzök onö</p>
+  <p>pı nulto pësnëhot vos umo dës xonluk mokon zöhün doi gıtno dus tiü moliyü son dus tiü öni kut yë küsowi hoi xokön lono lëkın mikdol yë ëto umo Umelıkın lı püzök onö</p>
 </HisyeoTabs>
 
 ### Length/Width/Height
 
-For mass, assume that measurements are in meters or feet (depending on where you
-are in the world). Add <HisyeoText kind='latin'>cënpö</HisyeoText> for kilometers or miles.
+A unit of length is 1 meter. <HisyeoWord is='cënpö'/> for kilometers or <HisyeoWord is='cüti'/> for
+millimeters.
+
+> In computer simulations, their average charge was strong enough to lift 100 pollen grains at least six millimeters in less than a second.
+> 
+> —Will Sullivan, Smithsonian Magazine, 2 Aug. 2024
+
+<HisyeoTabs>
+  <p>hön tüek yë wëilun ü cıngi mëtliös yünyoü zötëstö len oxon do ëo lö pı mulö ölë viyën volo zënsi inpoli lon toü öni kut cüti yë lomö hoi mënüs en kut sünkon.</p>
+</HisyeoTabs>
 
 <HisyeoTooltip />

docs/reference/word_types/nouns.mdx

@@ -117,6 +117,10 @@ The <HisyeoWord is='hoi'/> particle precedes this noun phrase.
 This role is used for NPs that represent where or when the action occurs. In
 English, this represents some of the senses of the words "in", "at", and "on".
 
+The counterpart of this particle is <HisyeoWord is='lon'/> for distance and
+duration. Unlike that particle, when you provide an amount of time to <HisyeoWord is='hoi'/> it
+means the length of time that it took to achieve the task specified in the rest of the predicate.
+
 When used with the negatitive particle <HisyeoWord is='yök'/>, it means that the
 marked noun phrase is either excluded from being the location or time of the
 committed act of the predicate or that the act itself was committed but at a